Implemented library linking from archive files rather then object files.

Feature exposed ONLY to libraries with "dot_a_linkage=true" in their
library.properties file
Fixes #10

Signed-off-by: Federico Fissore <[email protected]>

Author: Federico Fissore

src/arduino.cc/builder/builder_utils/utils.go

@@ -170,6 +170,7 @@ func ArchiveCompiledFiles(buildPath string, archiveFile string, objectFiles []st
 	for _, objectFile := range objectFiles {
 		properties := utils.MergeMapsOfStrings(make(map[string]string), buildProperties)
 		properties[constants.BUILD_PROPERTIES_ARCHIVE_FILE] = filepath.Base(archiveFilePath)
+		properties[constants.BUILD_PROPERTIES_ARCHIVE_FILE_PATH] = archiveFilePath
 		properties[constants.BUILD_PROPERTIES_OBJECT_FILE] = objectFile
 
 		_, err := ExecRecipe(properties, constants.RECIPE_AR_PATTERN, false, verbose, verbose, logger)

src/arduino.cc/builder/hardware/platform.keys.rewrite.txt

@@ -23,3 +23,6 @@ new.6.recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" -mcpu={buil
 #specific to RFduino 1.6.3
 old.7.recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -mcpu={build.mcu} {build.extra_flags} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" -Wl,--cref -o "{build.path}/{build.project_name}.elf" "-L{build.path}" -Wl,--warn-common -Wl,--warn-section-align -Wl,--start-group "{build.path}/syscalls.c.o" {object_files} "{build.variant.path}/{build.variant_system_lib}" "{build.variant.path}/libRFduino.a" "{build.variant.path}/libRFduinoBLE.a" "{build.variant.path}/libRFduinoGZLL.a" "{build.path}/{archive_file}" -Wl,--end-group
 new.7.recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -mcpu={build.mcu} {build.extra_flags} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" -Wl,--cref -o "{build.path}/{build.project_name}.elf" "-L{build.path}" -Wl,--warn-common -Wl,--warn-section-align -Wl,--start-group "{build.path}/core/syscalls.c.o" {object_files} "{build.variant.path}/{build.variant_system_lib}" "{build.variant.path}/libRFduino.a" "{build.variant.path}/libRFduinoBLE.a" "{build.variant.path}/libRFduinoGZLL.a" "{build.path}/{archive_file}" -Wl,--end-group
+
+old.8.recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/{archive_file}" "{object_file}"
+new.8.recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}"

src/arduino.cc/builder/phases/libraries_builder.go

@@ -93,6 +93,13 @@ func compileLibrary(objectFiles []string, library *types.Library, buildPath stri
 		if err != nil {
 			return nil, utils.WrapError(err)
 		}
+		if library.DotALinkage {
+			archiveFile, err := builder_utils.ArchiveCompiledFiles(libraryBuildPath, library.Name+".a", objectFiles, buildProperties, verbose, logger)
+			if err != nil {
+				return nil, utils.WrapError(err)
+			}
+			objectFiles = []string{archiveFile}
+		}
 	} else {
 		utilitySourcePath := filepath.Join(library.SrcFolder, constants.LIBRARY_FOLDER_UTILITY)
 		_, utilitySourcePathErr := os.Stat(utilitySourcePath)

src/arduino.cc/builder/phases/linker.go

@@ -49,13 +49,18 @@ func (s *Linker) Run(context map[string]interface{}) error {
 	objectFiles = append(objectFiles, objectFilesLibraries...)
 
 	coreArchiveFilePath := context[constants.CTX_ARCHIVE_FILE_PATH_CORE].(string)
+	buildPath := context[constants.CTX_BUILD_PATH].(string)
+	coreDotARelPath, err := filepath.Rel(buildPath, coreArchiveFilePath)
+	if err != nil {
+		return utils.WrapError(err)
+	}
 
 	buildProperties := context[constants.CTX_BUILD_PROPERTIES].(map[string]string)
 	verbose := context[constants.CTX_VERBOSE].(bool)
 	warningsLevel := context[constants.CTX_WARNINGS_LEVEL].(string)
 	logger := context[constants.CTX_LOGGER].(i18n.Logger)
 
-	err := link(objectFiles, coreArchiveFilePath, buildProperties, verbose, warningsLevel, logger)
+	err = link(objectFiles, coreDotARelPath, buildProperties, verbose, warningsLevel, logger)
 	if err != nil {
 		return utils.WrapError(err)
 	}
@@ -72,8 +77,7 @@ func link(objectFiles []string, coreArchiveFilePath string, buildProperties map[
 	properties := utils.MergeMapsOfStrings(make(map[string]string), buildProperties)
 	properties[constants.BUILD_PROPERTIES_COMPILER_C_ELF_FLAGS] = properties[constants.BUILD_PROPERTIES_COMPILER_C_ELF_FLAGS] + optRelax
 	properties[constants.BUILD_PROPERTIES_COMPILER_WARNING_FLAGS] = properties[constants.BUILD_PROPERTIES_COMPILER_WARNING_FLAGS+"."+warningsLevel]
-	properties[constants.BUILD_PROPERTIES_ARCHIVE_FILE] = filepath.Base(coreArchiveFilePath)
-	properties[constants.BUILD_PROPERTIES_ARCHIVE_FILE_PATH] = coreArchiveFilePath
+	properties[constants.BUILD_PROPERTIES_ARCHIVE_FILE] = coreArchiveFilePath
 	properties[constants.BUILD_PROPERTIES_OBJECT_FILES] = objectFileList
 
 	_, err := builder_utils.ExecRecipe(properties, constants.RECIPE_C_COMBINE_PATTERN, false, verbose, verbose, logger)

src/arduino.cc/builder/test/platform_keys_rewrite_loader_test.go

@@ -48,7 +48,7 @@ func TestLoadPlatformKeysRewrite(t *testing.T) {
 
 	platformKeysRewrite := context[constants.CTX_PLATFORM_KEYS_REWRITE].(types.PlatforKeysRewrite)
 
-	require.Equal(t, 8, len(platformKeysRewrite.Rewrites))
+	require.Equal(t, 9, len(platformKeysRewrite.Rewrites))
 	require.Equal(t, constants.BUILD_PROPERTIES_COMPILER_PATH, platformKeysRewrite.Rewrites[0].Key)
 	require.Equal(t, "{runtime.ide.path}/hardware/tools/avr/bin/", platformKeysRewrite.Rewrites[0].OldValue)
 	require.Equal(t, "{runtime.tools.avr-gcc.path}/bin/", platformKeysRewrite.Rewrites[0].NewValue)